ASTROSAT CZTI

Data Quality Report

Orbit 39680

Creation date: 2024-06-27T22:07:39.560104
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A12_051T01_9000005490_39680cztM0_level2.fits modeM0/AS1A12_051T01_9000005490_39680cztM0_level2_quad_clean.evt
Size (bytes)640,964,16066,643,200
Size611.3 MB 63.6 MB
Events in quadrant A12,452,93734,794
Events in quadrant B2,841,170599,550
Events in quadrant C5,357,665520,432
Events in quadrant D2,692,800518,064

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0403543
B0117152
C0193602
D0115372

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4913471796.010584%
B4913821.669041%
C491358811.968248%
D4913961.954000%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7035 4914 4078 4078 57.97% 82.99%
B 7035 4914 64 64 0.91% 1.30%
C 7035 4914 590 590 8.39% 12.01%
D 7035 4914 111 111 1.58% 2.26%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 15 222 10387139 174256.25 292 286 59.6
A 15 174 697826 11702.36 292 286 59.6
A 10 83 220704 3697.87 292 286 59.6
B 5 172 248048 2330.48 550 536 106.2
B 0 229 100219 938.58 550 536 106.2
B 5 32 96961 907.9 550 536 106.2
C 15 208 1822138 15084.36 515 518 120.8
C 9 187 1227580 10160.98 515 518 120.8
C 15 214 202178 1669.89 515 518 120.8
D 12 218 351865 2685.2 527 512 130.8
D 12 233 116465 886.17 527 512 130.8
D 13 249 60020 454.79 527 512 130.8

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter